tag:blogger.com,1999:blog-2325042365235994476.post6951154026377365189..comments2018-05-21T01:44:53.494-04:00Comments on diyembedded.com: New products added to store!brennenhttp://www.blogger.com/profile/06530709850522978620noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-2325042365235994476.post-7408431839319115372009-11-18T11:07:16.143-05:002009-11-18T11:07:16.143-05:00I just wanted to say thank you very very much! We ...I just wanted to say thank you very very much! We are using this radio as part of our SR. Design project and your code and tutorials saved us hundreds of hours of anguish. It still took 60 or so hours to port the code to a 16f887 and get it working, mainly due to little issues with delays, uart, spi and what not, but we now have the two modules up and running and are super excited. Thanks again for taking the time to create the tutorials!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-36454011345476270492009-09-29T11:44:21.194-04:002009-09-29T11:44:21.194-04:00Hi brennen.
It&#39;s a nice site you&#39;ve got. ...Hi brennen.<br /><br />It&#39;s a nice site you&#39;ve got. You get a plus for all the pics. Have you ever tried any of the Texas Instruments (Chipcon) radios? E.g. the &lt; 1 GHz variants that should give you a lot better range?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-31170026743337231302009-08-20T05:13:32.682-04:002009-08-20T05:13:32.682-04:00I really don&#39;t understand why these same nRF m...I really don&#39;t understand why these same nRF modules cost this much.<br />An equivalent module from Decibit is<br />going for $8.15 DCBT-24N &amp; with<br />+19dBm (79mW) Power Amp for $16.46.<br />Do note that these modules come with<br />the nRF24L01 &amp; not the nRF24L01+.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-19912709066421635672009-06-01T18:48:13.191-04:002009-06-01T18:48:13.191-04:00I have a few questions about the functionality of ...I have a few questions about the functionality of the nRF24L01. I'm thinking about using it in an audio application. With this device would I be capable of sampling the output of an mp3 player and transmitting wirelessly to multiple transceivers at the same time? I'm thinking if I sampled with a 16 bit ADC at 22 khz I'd be at around 700 kbs (stereo)...This is less then the advertised 2Mbs over air but I'm not 100% clear on all the overhead that goes into the packeting of data.<br /><br />Also..great site! I'll be using your tutorials for sure!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-26099418653692410032009-05-26T02:06:17.513-04:002009-05-26T02:06:17.513-04:00Hi,Brennen. What's about the valid communication d...Hi,Brennen. What's about the valid communication distance for your 24L01+ module with chip antenna?daymistnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-83900201758462068612009-03-16T10:25:00.000-04:002009-03-16T10:25:00.000-04:00Thanks for the reply.Its really easy to do a simpl...Thanks for the reply.<BR/><BR/>Its really easy to do a simple, practical test with multipath fading. Saturate the link with data and move the transmitter or receiver while well within range of the other end of the link. If there is dataloss, then multipath fading is a problem and a diversity receiver design may be necessary.electronjunkiehttps://www.blogger.com/profile/01378961830222276846noreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-4612413358320033812009-03-16T08:57:00.000-04:002009-03-16T08:57:00.000-04:00sTiZZiT - As far as range goes, I'm seeing somethi...sTiZZiT - As far as range goes, I'm seeing something on the order of 60 meters being pretty reasonable distance for both the 24LU1 and 24L01+ chip antenna boards. I haven't actually tested the RP-SMA boards, though, because their range is very dependent upon the antenna that is attached.<BR/><BR/>Anonymous - I'm not really sure how to respond to that statement, given that it's pretty much just an anti-FCC rant.<BR/><BR/>electronjunkie - I haven't tested multipath fading on the receivers, so I can't really offer much advice there. Nordic's tech support would be better-suited for that question. <BR/><BR/>In theory, you could run up to 128 transmitters at a time at 1 Mbps, provided they are all on different channels. Just for clarity, you could only run 64 units at 2 Mbps, because you have to have 2 MHz between channels (opposed to 1 MHz at 1 Mbps).<BR/><BR/>Strangely, I hadn't even thought about trying to get with Digikey or Mouser for a distribution deal. I'll consider that.brennenhttps://www.blogger.com/profile/06530709850522978620noreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-15125257993094333852009-03-15T16:07:00.000-04:002009-03-15T16:07:00.000-04:00Do the receivers suffer from multipath fading? Us...Do the receivers suffer from multipath fading? Usually a diversity antenna/preamp combo is required on the receiver to minimize this.<BR/><BR/>Also how many transmitters can run simultaneously at 1Mbps? <BR/><BR/>You ought to get Mouser or Digikey to distribute your breakout board. They don't seem to have anything like this yet or do they?electronjunkiehttps://www.blogger.com/profile/01378961830222276846noreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-61041468694588527572009-03-09T21:32:00.000-04:002009-03-09T21:32:00.000-04:00hi Anonymous,Even if the 2.4GHz is called the "fre...hi Anonymous,<BR/>Even if the 2.4GHz is called the "free" band, the FCC still wants to control it. commercial products still must prove they coexist and play well with BlueTooth, zigbee, WIFI...<BR/>MartyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-40418427406410942962009-02-18T16:28:00.000-05:002009-02-18T16:28:00.000-05:00Brennen,What kind of range are you seeing with the...Brennen,<BR/><BR/>What kind of range are you seeing with the 24L01+'s? I have some different breakout boards here with them and I am not very impressed. Especially when they have to deal with multipath and close range but not LOS transmissions. What type of range do you see at the different baud rates?sTiZZiThttps://www.blogger.com/profile/02554811734417445444noreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-1899603578098445822009-01-20T07:43:00.000-05:002009-01-20T07:43:00.000-05:00The only trouble you might be able to get into wit...The only trouble you might be able to get into with the FCC regarding the 24L01+ (or 24LU1) chips is if you go too far up in the channel number. As I recall, the FCC limits you to 2480 or so MHz, so channels above 80 are technically illegal. Other countries have different rules on channels, so caveat emptor.<BR/><BR/>So long as you have designed your protocol properly, that wouldn't be difficult. You could actually put each sensor and trigger pair on its own channel, and then they wouldn't interfere with any other pair of devices. With my tutorials and include library, it would be pretty trivial.brennenhttps://www.blogger.com/profile/06530709850522978620noreply@blogger.comtag:blogger.com,1999:blog-2325042365235994476.post-78280309590791430912009-01-19T19:08:00.000-05:002009-01-19T19:08:00.000-05:00So what's the nRF24L01 status regarding RF use? Wi...So what's the nRF24L01 status regarding RF use? Will the FCC sue me if I use it without applying for a license ? :-)<BR/><BR/>How does it work with multiple transceivers in range? Currently I have 8 sensors triggering 8 indicators in a large hall. It would be nice if I could switch those to wireless, but would 8x2 transceivers be able to talk to their respective endpoints?Anonymousnoreply@blogger.com